Kim Yong Chol, North Korea's lead negotiator in denuclearization talks. Photo: Andrew Harnik/AFP via Getty Images

North Korea's lead negotiator in denuclearization talks with the U.S. arrived in Washington Thursday evening, amid reports that the two sides are seeking to lay the groundwork for a possible second summit between President Trump and North Korean leader Kim Jong-un, CNN reports.

Details: Kim Yong Chol is expected to meet with Secretary of State Mike Pompeo and U.S. Special Representative to North Korea Steve Biegun on Friday, according to CNN. His arrival at Washington Dulles Airport comes just hours after Trump unveiled a plan for a new missile defense strategy, which explicitly refers to North Korea as an "extraordinary threat" to the U.S.

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SurveyMonkey poll: Trump improves, but not enough

Trump and Biden during the final debate. Photo: Xinhua/Liu Jie via Getty Images

President Trump's final debate performance exceeded Americans' expectations, but it wasn't enough to shift the dynamics that left him trailing Joe Biden across most measures, according to a new Axios-SurveyMonkey poll.

What they're saying: "Liar" was the word used most by debate watchers to describe Trump's performance, followed by "lies," "strong," "presidential" and "childish." "Presidential" was the word used most to describe Biden's performance, followed by "liar," "weak," "expected" and "honest."

Hunter Biden saga dominates online debate

Data: NewsWhip; Table: Axios Visuals

The mainstream media turned away. But online, President Trump's charges about Hunter Biden were by far the dominant storyline about the final presidential debate, according to exclusive NewsWhip data provided to Axios.

  • Coverage of business dealings by Joe Biden's son — and pre-debate allegations by one of his former business associates, Tony Bobulinski — garnered more than twice as much online activity (likes, comments, shares) as the runner-up.